14 citations · 23 across the 6 of their papers we have counts for
6 papers
Ultracompact anisotropic stars and gravastars in general relativity
Prajwal Hassan Puttasiddappa, Nora Bretón, Santiago Esteban Perez Bergliaffa
We study static, spherically symmetric ultracompact objects in General Relativity with anisotropic stress. Using the covariant anisotropic equation of state and assuming homogeneou…
Bounds on at the Galactic Center
Prajwal Hassan Puttasiddappa, Muzammil Mushtaq, Willian Ramirez +2
We constrain the cosmological constant, , using astrometric and spectroscopic observations of the S2 star, supplemented by S1 and S14 stars orbiting Sgr A. We develop a fram…
Quintom Dark Energy: Future Attractor and Phantom Crossing in Light of DESI DR2 Observation
Phusuda Thanankullaphong, Prasanta Sahoo, Prajwal Hassan Puttasiddappa +1
We study the late-time cosmological dynamics of a two-field dark energy model consisting of a canonical quintessence scalar field and a phantom scalar field in a spatially flat FLR…
Shadows of naked singularity in Brans-Dicke gravity
Prajwal Hassan Puttasiddappa, Davi C Rodrigues, David F Mota
We investigate the observational features of exact vacuum solutions in Brans-Dicke (BD) gravity, focusing on their implications for black hole shadow imaging. Motivated by the Even…
Dust attenuation in galaxies at cosmic dawn from the FirstLight simulations
Muzammil Mushtaq, Daniel Ceverino, Ralf S. Klessen +2
We study the behavior of dust in galaxies at cosmic dawn, z=6-8, by coupling the FirstLight simulations with the radiative transfer code POLARIS. The starburst nature of these gala…
Dust Temperature and Emission of FirstLight Simulated Galaxies at Cosmic Dawn
Muzammil Mushtaq, Prajwal Hassan Puttasiddappa
We study the behavior of dust temperature and its infrared emission of FirstLight1 simulated galaxies at the redshift of 6 and 8, by using POLARIS2 as a Monte Carlo photon transpor…